The lock screen is the first thing the user sees when unlocking their smartphone. The standard clock widget built into the system Androidusually displays the time in the usual 24-hour format or in a 12-hour format with AM/PM indicators. However, everyone’s tastes are different: some need large numbers, some need seconds, and some prefer a minimalist style without unnecessary details. Unfortunately, standard system settings often limit the ability to change the appearance of this element.
In this article we will take a detailed look at how to change the clock format on the lock screen of your device. We will look at both the built-in capabilities of various shells from manufacturers, as well as advanced methods using third-party software and software debugging. You can adapt the interface to your needs, making it not only functional, but also aesthetically pleasing. ADB. You can adapt the interface to your needs, making it not only functional, but also aesthetically pleasing.
It is worth noting right away that the depth of the available settings directly depends on the model of your smartphone and the version of the operating system. Owners of devices based on MIUI, OneUI or OxygenOS have more freedom of action out of the box than users of pure Android or budget models with reduced functionality. Below we will offer solutions for all categories of devices.
Standard system settings and manufacturer’s shell
First of all, you need to check the capabilities provided by the operating system itself or the proprietary shell of your smartphone. Many manufacturers, such as Samsung, Xiaomi and Realme, implement their own themes and locking styles that allow you to change not only the background, but also the location, font, and time display format.
To access these settings, you most often need to go to the personalization section. The path may vary, but usually it looks like this: go to Settings → Wallpaper and style or Settings → Lock screen. Here you can find an option to select a watch style. If your phone supports the Always-on Screen feature (AOD), the time format settings are often duplicated for this mode.
Please note that changing the format from 12-hour to 24-hour (and vice versa) is often tied to the general date and time settings in the system, and not just to the lock screen. To change the global format, go to Settings → System → Date and time and toggle the toggle switch "Use 24-hour format". This action will instantly update the time display in all system widgets.
⚠️ Attention: On some devices with shell ColorOS or Funtouch OS Changing the clock style is only possible when the “Always-on screen” mode is activated. If this feature is turned off, menu options may be hidden or inactive.
If there is no style selection option in the standard menu, try holding your finger on an empty space on the desktop and selecting “Wallpaper” or “Lock screen settings.” In new versions Android (starting from 12 and higher), Google implements personalization elements directly into the launcher, which sometimes allows you to indirectly influence the appearance of blocking widgets by installing the appropriate themes.
Using applications to customize the lock screen
When built-in tools are not enough, third-party applications from the store come to the rescue Google Play. There are many apps that completely replace the standard lock screen or put their own layer on top of it, offering hundreds of time display options. Such solutions are ideal for those who want to see not only the clock on the screen, but also the weather, steps or notifications in a unique design. Popular applications such as Kustom Lock Screen Maker or Kustom Lock Screen Maker give complete control over every pixel. In the editor
Popular apps such as Hi Locker, KLCK (Kustom Lock Screen Maker) or AcDisplay, give complete control over every pixel. In the editor KLCK, for example, you can create your own widget with any font, color and even animation. The setup process looks like this: you install the application, give it the necessary permissions (access to notifications, device administrator), and then select a ready-made preset or create your own from scratch.
- 🎨 Hi Locker: offers a huge library of ready-made themes that simulate the lock screens of iOS and various Android shells, with a simple change of the time format.
- ⚙️ KLCK: a professional tool for creating unique interfaces that requires time to set up, but giving maximum freedom.
- 🔔 AcDisplay: Focuses on functionality and battery saving by displaying the time and notifications on a black background when new messages arrive.
It is important to understand that installing a third-party launcher or lock manager may affect system response time and battery consumption. Some aggressive power saving systems may force such applications to close in the background. To avoid this, you need to add the application to the battery exclusions in your smartphone's settings.
When using custom lock screens, be sure to disable the standard lock screen in the security settings to avoid double swiping to unlock the device.
Advanced setup via ADB and system commands
For users who are not afraid to work with the computer and command line, there is a method for changing system parameters through the debug bridge Android Debug Bridge (ADB). This method allows you to change hidden settings that are not displayed in the graphical interface. It is especially relevant for devices with pure Android or custom firmware, where the developers have hidden customization options.
Before you start, you need to activate developer mode on your phone. To do this, go to Settings → About phone and quickly click 7 times on the item "Build number". After the message “You have become a developer” appears, go to the menu For developers and enable the item USB debugging.
Connect your smartphone to your computer with a cable and open a terminal or command line on your PC. Make sure ADB drivers are installed. Enter the command to check the connection:
adb devicesIf the device is displayed in the list with status device, you can start changing the parameters. The commands may vary depending on the Android version, but changing the time format is often controlled through global settings. Try the following instructions to force the 24-hour format:
adb shell settings put global time_12_24 24To return to the 12-hour format, replace the last value with 12. There are also commands to change the pixel density or interface scale, which can visually change the size of the clock on the lock screen, although this will affect the entire system interface.
Risks of using ADB
Incorrectly entering commands can lead to system instability or factory resets. Always check the command syntax before pressing Enter. If the phone stops responding, try running the adb reboot command to reboot.
Changing the theme and fonts
Another effective, but less obvious way to change the perception of the clock on the lock screen is to change the system theme or font. The MIUI (Xiaomi), EMUI (Huawei) and OneUI (Samsung) shells have built-in theme stores where designers create comprehensive solutions. When applying a new theme, not only the icons and wallpaper often change, but also the style of the time widget, its font and display format.
Go to the “Themes” application on your device. Search for “digital clock,” “minimalism,” or “analog clock.” While viewing the preview, pay attention to the screenshots of the lock screen. Many themes allow you to apply elements selectively: you can set only the blocking style from the theme you like without changing the rest of the interface.
If changing the theme did not give the desired result, try changing the system font. In the display settings, find the item "Font and font size". Choosing a different style can dramatically change the appearance of the numbers, making them thinner, bolder, or handwritten. This simple action often refreshes the appearance of the device without installing unnecessary software.
| Android shell | Ability to change style | Where to look for settings | Support for third-party themes |
|---|---|---|---|
| OneUI (Samsung) | High | Settings → Wallpaper and style | Yes (Galaxy Themes) |
| MIUI (Xiaomi) | Very high | Application “Themes” | Yes (huge catalog) |
| Pixel UI (Stock) | Low | Settings → Lock screen | Limited |
| OxygenOS (OnePlus) | Medium | Settings → Personalization | Yes (via the theme store) |
Changing the system theme is the safest and fastest way to change the appearance of the clock without the risk of compromising the stability of the smartphone.
Solving problems with time display
Sometimes users are faced with a situation where the clock on the lock screen disappears, is displayed incorrectly, or is not updated. This could be caused by a software glitch, an application conflict, or a bug in the System Interface service. Before resorting to radical measures, it is worth performing a number of diagnostic actions.
Check whether the “Energy Saving” or “Ultra Energy Saving” mode is turned on. In these modes, the system often disables the display of the clock when the screen is turned off or simplifies the interface to a black and white appearance, removing customization. Disable these modes and check if the clock is back in place.
If the problem occurs after installing a new application, try uninstalling it. Conflicting software can intercept control of the lock screen and render it incorrectly. Also clear the cache of the system application “Themes” or “Wallpaper and Style” through the app management menu.
⚠️ Attention: If the clock disappeared after updating the firmware, this may be a temporary bug in the new OS version. In this case, wait for a patch from the manufacturer or reset the lock screen settings to factory settings.
As a last resort, if all else fails, you can reset accessibility settings or reset all applications (without deleting personal data). This will return the system interface settings to their original state, which often solves problems with displaying widgets.
☑️ Diagnosing the disappearance of the clock
Questions and answers about setting the time
Why did the clock on the lock screen not change after changing the time format?
This may be due to interface caching. Try restarting your smartphone. Also make sure that you change the format in the system date and time settings, and not just in the settings of a specific clock application.
Is it possible to add seconds to the clock on the standard lock screen?
Most standard Android skins do not have this feature to save battery power and reduce visual noise. You can add seconds only using applications like KLCK or through modification of system files (Root access is required).
Is it safe to use applications to replace the lock screen?
Using verified applications from Google Play is safe. However, remember that such applications require access to notifications and device administrator rights. Always read permissions before installation and download software only from reputable developers.
How to return the standard clock appearance after installing a theme?
Go to the “Themes” application, go to your profile or “My Themes” section and select a standard theme (usually called “Classic”, “Default” or “Default”). Apply it to reset all visual changes.
Does the 24-hour format affect the alarm clock?
No, the time display format (12 or 24 hours) is a purely visual interface setting. It does not affect the logic of the operation of alarms, timers and schedules in the system, which always work in absolute time.